A/C Freash air question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nyncompute · 03-24-2005, 01:07 PM

I am working on the A/C heating system, and after removing the cowl ,I saw this little set up. I assume this flap is supposed to open via the metal lever. Qustion: What connects the lever to the door. What sort of clip / connector is used (besides bailing wire).

Custom 68 · 03-24-2005, 01:17 PM

Alright if I remember correct the metal rod and spring in your picture is just there to keep it in the firewall and let it rotate. The spring keeps it engaged. The lower arrow to the hole gets a spring to keep this open. On the outside not shown in the photo sticks out of the cowl into the engine compartment on this goes another rod that gets attached to a vacumn pot the levers inside the cab operate the vaccumn that opens this one and closes the vent on the passengers side this is the same as the "recurculate" when the outside vent is open the inside closes this uses fresh air...

clear as mud? I can get some picture of my setup if you need. I am sure there are others that may clear this up.
DAve

nyncompute · 03-24-2005, 02:44 PM

Ok I think I see. So the spring goes from the lower arrow hole to ????

**CPNE** · 03-24-2005, 02:57 PM

Quote:

Originally Posted by nyncompute

Ok I think I see. So the spring goes from the lower arrow hole to ????

Yes. Here is a pic of the vacuum pot

Custom 68 · 03-24-2005, 03:37 PM

it goes to the hole right below the 3rd windshield wiper looking bracket in CPNE's picture. It just hooks somewhere to keep it open prior to vaccumn being applied...

nyncompute · 03-24-2005, 04:08 PM

Ok so there is a spring..it goes through the hole to where? should I lay off the pipe a little? (I have the whole firewall stuff complete thanks CPNE)

Custom 68 · 03-24-2005, 04:16 PM

my post above was intended to answer that... the spring will go up from what you are showing to a small hole in the non used windshield wiper brace. I dont think I can edit the picts but may try.

Custom 68 · 03-24-2005, 04:18 PM

look here

nyncompute · 03-24-2005, 06:27 PM

I get it.. I relate to pictures better than the written word

JimKshortstep4x4 · 03-24-2005, 08:24 PM

Here is a pic of where the spring hooks up.

Jim

03-24-2005, 01:07 PM	#1
nyncompute Registered User Join Date: Nov 2004 Location: Southern Nevada Posts: 532	A/C Freash air question I am working on the A/C heating system, and after removing the cowl ,I saw this little set up. I assume this flap is supposed to open via the metal lever. Qustion: What connects the lever to the door. What sort of clip / connector is used (besides bailing wire).

03-24-2005, 01:17 PM	#2
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Alright if I remember correct the metal rod and spring in your picture is just there to keep it in the firewall and let it rotate. The spring keeps it engaged. The lower arrow to the hole gets a spring to keep this open. On the outside not shown in the photo sticks out of the cowl into the engine compartment on this goes another rod that gets attached to a vacumn pot the levers inside the cab operate the vaccumn that opens this one and closes the vent on the passengers side this is the same as the "recurculate" when the outside vent is open the inside closes this uses fresh air... clear as mud? I can get some picture of my setup if you need. I am sure there are others that may clear this up. DAve __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

03-24-2005, 03:37 PM	#5
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	it goes to the hole right below the 3rd windshield wiper looking bracket in CPNE's picture. It just hooks somewhere to keep it open prior to vaccumn being applied... __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

03-24-2005, 04:16 PM	#7
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	my post above was intended to answer that... the spring will go up from what you are showing to a small hole in the non used windshield wiper brace. I dont think I can edit the picts but may try. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

03-24-2005, 04:18 PM	#8
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	look here Attached Images __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

03-24-2005, 02:44 PM	#3
nyncompute Registered User Join Date: Nov 2004 Location: Southern Nevada Posts: 532	Ok I think I see. So the spring goes from the lower arrow hole to ????

03-24-2005, 04:08 PM	#6
nyncompute Registered User Join Date: Nov 2004 Location: Southern Nevada Posts: 532	Ok so there is a spring..it goes through the hole to where? should I lay off the pipe a little? (I have the whole firewall stuff complete thanks CPNE)

03-24-2005, 06:27 PM	#9
nyncompute Registered User Join Date: Nov 2004 Location: Southern Nevada Posts: 532	I get it.. I relate to pictures better than the written word

03-24-2005, 08:24 PM	#10
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Here is a pic of where the spring hooks up. Jim Attached Images



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